Second time around dating
I'm 38 and single for the first time since I was 20. I have met a great guy and we've been going out 2 months. I'm 95% sure he is not seeing anyone else as we see each other 6 days a week and then he is at work. I need help on how to ask him certain things without scaring him away. We met online. I let my subscription expire to the dating site. How do I ask him if he is talking to anyone else from the site or wants to meet/date anyone else? How do I let him know how much I like him and would like to be exclusive with him?
Just to give a little background. I text him and tell him I miss him and he responds with "me too", I take that as "I miss you too" but "me too" is easier to text and not as big as a commitment. We are intimate and I spend the night over his house a couple times a week and no one has come to the house wondering what I'm doing there. When we are in public he shows some PDA (little kisses, hand holding, hugs) so that to me indicates he is not worried about running into anyone that might question it. He has introduced me to many of his friends.
I appreciate any advice on the above or any advice on second time around dating. Things are so different now than when I was 20.